And now for comic relief………..
To use fajing when pushing hands freely you must learn to do it on demand. This means there is no time to prepare, no getting into a low stance, gather you Qi, take a deep breathe and focus your mind. When you need it, you do it.
To be able to do fajing easily takes deep learning. Deep learning starts by learning simple movements. When chained together and used in a flowing manner the technique may seem complex but it should not be.
As you become familiar with basic requirements then you move on into the realm of using intent. This will enable you to issue a penetrating strike even when you do it at zero-inch distance as shown below :-